Pick-up and separating apparatus



June 23, 1964 H. o. NEWLIN PICK-UP AND SEPARATING APPARATUS 5 Sheets-Sheet 1 Filed Aug. 7, 1961 n aeu oaa. aoooe lmzenzor Harry 0. Newizn June 23, 1964 H. o. NEWLIN PICK-UP AND SEPARATING APPARATUS 5 Sheets-Sheet 2 Filed Aug. '7, 1961 hey jnvenzar ffarry O fVewlz'n 5 nut/M a y 2507" June 23, 1964 H. o. NEWLIN 3,138,374

PICK-UP AND SEPARATING APPARATUS Filed Aug. 7, 1961 5 Sheets-Sheet 3 lnvenlor Early OJI/ewlz'n 5y fimw/ M,

fliiorney June 23, 1964 H. o. NEWLIN PICK-UP AND SEPARATING APPARATL IS 5 Sheets-Sheet 4 Filed Aug. 7, 1961 June 23, 1964 H. o. NEWLIN 3,138,374

PICK-UP AND SEPARATING APPARATUS Filed Aug. 7, 1961 5 Sheets-Sheet 5 United States Patent O 3,138,374 PICK-UP AND SEFARATING APPARATEB Harry 0. Newlin, Siroltie, Ilh, assignor to The Frederick Post Co., Chicago, ill., a corporation of lllinob Filed Aug. '7, 1961, Ser. No. 129,856 13 Claims. (Cl. 271-74) The present invention relates generally to apparatus for picking up a sheet of paper or the like, and in particular, it relates to separating two sheets of paper advancing together in facewise contact.

The apparatus has special application to machines in which a light-sensitive sheet is printed by actinic light through a transparency having a design thereon, such as a mechanical drawing on a so-called tracing sheet.

It is the general object of the invention to provide a pick-up roll which holds a sheet to it by suction and carries it around the roll for delivery elsewhere.

In a preferred use of the machine, it is an object of the invention to separate a light-printed sheet from a transparency or the like through which it has been printed.

It is a particular object of the present invention to provide a machine which automatically separates a lightprinted sheet from a transparency through which it 'is printed and to deliver it for development of the latent image formed by the printing.

Accordingly, the invention is explained by reference to a light-printing machine such as may be used for blueprints and diazotypes.

The present invention in its preferred form incorporates in a light-printing machine certain mechanical parts which operate at the proper time to effect the separation. By combining the printing parts with the separating parts, only one set of conveyer means is needed.

Briefly described, a transparency and a light-sensitive sheet in contact for printing are fed to conveyer means which carries them to and around a revolving transparent exposure cylinder within which is located the light source. During this passage a latent image is formed, later to be developed. The two are held in contact with each other between belts of the conveyermeans and the exposure cylinder. In feeding the sheets into the machine, they should have their leading edges close together within limits, with either one leading, for reasons which will appear hereinafter. At or near a fixed point where the main conveyer belts tangentially leave the exposure cylinder, abattery of pick-up fingers lifts the lamination of said two sheets from the exposure cylinder and they and the belts move toward a pick-up cylinder. There is a wide gap between two belts so that the light-printed sheet may contact the pick-up cylinder at the gap area. 7

The pick-up cylinder has a band of openings for suction extending around its periphery so that a suitable open area is presentable to a sheet as soon as it arrives. Means is provided to create continuous sub-atmospheric pressure within the suction cylinder, which cylinder rotates continuously while the machine is in use, by reason of the several endless belts which drive it and the exposure cylinder. 7

However, in order to minimize wasteful use of suction through the suction openings, means is provided to. block said openings except for a small arcuate extent located when stationary at a proper position to pick up the printed sheet. In connection therewith, is means to move the arcua-te region of suction with the picked up sheet from its stationary position through one revolution back to a condition of rest at said stationary position. This is preferably effected by electrical control means actuated by the approach of the twosheets to the pick-up cylinder.

In moving to the pick-up cylinder the conveyer belts contact the cylinder. By reason of the gap between belts 3,138,374 C Patented June 23, 1964 the printed sheet may contact the cylinder. Within the regions of the belts there is no force holding the printed sheet to the belts so the assembly of the two sheets could fall away from the belts, when they are positioned below the belts and below the pick-up cylinder. But, in the gap area of the cylinder, the described openings which exert suction, draw the printed sheet to the cylinder and carry it upwardly so that the other sheet may either fall away from it or continue in a different direction.

Between the exposure cylinder and the pick-up cylinder are located pick-up fingers which ride on the exposure cylinder and pick the lamination of two sheets from it. The fingers are preferably formed as guides to hold the lamination in contact with the belts and to direct the removed sheets tangentially to the pick-up cylinder for contact with the suction area thereof.

The presently preferred form of the apparatus briefly described above is shownin the accompanying drawings, in which:

FIG. 1 is a side view of the apparatus with parts of the side plate broken away.

FIG. 2 is a front view of the apparatus shown in FIG. 1.

FIG. 3 is an enlarged view in cross-section on line 3-3 of FIG. 1, showing at the right a cross-section of the solenoid and the parts operated in connection therewith.

FIG. 4 isan enlarged .view taken on line 44 of FIG. 1, showing the insulated structure related to the electrical control.

FIG. '5 is an enlarged cross-section taken on the line 5-5 of FIG. 2.

FIG. 6 is a fragmentary view of a portion of FIG. 5 with the parts in normal starting position.

FIG. 7 is a side View of the solenoid showing two positions of the controlling bar during energization of the solenoid.

FIG. 8 is a diagram of the electrical connections including diagrammatically associated parts connected therewith.

In FIG. 1, a base 10 carries a motor 12 with which is associted a speed reduction box 14 for a slow-speed driving gear 16. A driving chain 18 connectsgear 16 to gear 24) on a shaft 22 bearingin side plates 24 and 24.

Shaft 22 within the side plate 24 provides a driving roll 26 around which are looped a plurality of spaced conveyer tapes or belts generally designated 28. bottom runs of the tapes in FIG. 1 move to the left and around idling cylinder 30 on shaft 32 (see FIG. 2). I

The upper horizontal runs of the tapes 28 in FIG. 1 move to the right to and around a transparent rotary exposure cylinder 36, containing a light source 36 and a reflector 36 both held stationary by bracket means indicated at 38 secured to the side plates 24 and 24'.

One of two guiding rollers at the end edges of the ex peripheral position- 45 which position cylinder 44 and permit its rotation.

Cylinder 44, as illustrated in FIG. 2, shows an exemplary number of six tapes 28 passing over it, and an exemplary gap between two of the tapes 28, which gap is formed between two tapes by reason of one or more tapes 28' leaving the exposure cylinder, as shown in FIG. 5 at the right, to join the other tapes 28 over idler roll 46, which leads all the tapes 28.(FIG. 1) to idler roll 4-8 over which they pass to driving roll 26. Spacer flanges 49'are present on roll 48 to aline the belts 28.

The cylinder 44 at the gap is slightly larger in diam- The eter than under the belts and is substantially the same as the adjacent portions with their belts, thus to give a uniform diameter for receipt of a sheet. This larger gap section is provided with perforate area substantially continuous around the periphery, preferably by a number of closely packed circular openings 50 sufficiently small to prevent inadvertent receipt of a finger. Cylinder 44 is driven by friction from the tapes 28 passing over it, excepting tapes 28.

The circumferential area containing the holes 50 is available for exerting suction to pick up a sheet brought to the cylinder. To limit the extent of said area which exerts suction, additional means is provided.

Bearing within the cylinder 44 is an inner hollow cylinder 52 with closed area to block a major arcuate portion of the holes 50 and an open area in the form of an elemental slot 54 of small arcuate width in its circumference to register at all times with open area of said holes 50. FIG. 3 shows the inner cylinder 52 closed at its right end by a disk 56 rigid with shaft 58 extending to the right well beyond the side plate 24. Shaft 58 bears in a partition plate 60 Within cylinder 44 and an end plate 62 for the cylinder 44.

End plate 62 is rigid with a collar 64 extending through side plate 24, which collar carries a friction clutch operable to effect turning of the inner cylinder 52 with the outer cylinder 44.

The friction clutch comprises clutch plate 66 integral with collar 64 against which is a friction disk 68. Pacing the friction disk 68 is a second clutch plate 70 under spring-pressure and connected to rotate shaft 58 through the clutch, being thus driven by the outer cylinder 44. A driven plate 72 is secured to shaft 58 by set screw 73 and is spaced away from clutch plate 70 to which it is connected by pins 74 rigid in clutch plate 70 and slidable in driving plate 72. Around the pins are springs 76 urging clutch plate 70 onto the friction disk 68.

The above-described clutch is related to an electrical system for actuating the inner cylinder 52. FIG. 4 shows a bar 78 carried by and insulated from the side plates 24 and 24. This bar carries a contact plate 80.

Another bar 82 is likewise fixed and insulated in the side plates, and it carries pick-up fingers 84 rotatable on the bar, each normally urged in one direction by its individual spring 86 around the bar. These fingers are shown in FIG. as normally urged onto the exposure cylinder 36, to lift the laminated sheets from the cylinder and to guide them into contact with separation cylinder 44. The fingers designated 84' in FIG. 4 are special contact metal and lie in the zone of the holes 50 in the suction cylinder 44. Normally, they contact the plate 80 and complete an electric circuit, that is, when no sheet from the exposure cylinder 36 intervenes.

FIG. 8 shows the electrical circuit. The power source 88 is connected by wires 89-90 to bar 82 and fingers 84', and by contact with the contact plate 80 to bar 78. Bar 78 connects by wire 91 through relay 92 and back by wires 93-94 to source 88.

When the relay is energized its armature 95 is pulled against spring 96, so that on de-energization the armature 95 strikes contact 97 which is connected by wire 98 to live wire 89. Armature 95 is connected by wire 99 and control switch 99' through solenoid 100 and by wire 101, to the live wire 94. Within the solenoid is a spring pressed plunger 102 (FIGS. 3 and 7) drawn inwardly against spring 104 on energizing the solenoid. Thus, when a print approaches the suction cylinder 44, it energizes the solenoid 100, provided switch 99' is closed. When pick-up by suction is undesired, switch 99' is opened.

The solenoid 100 is mounted in an open casing 100' carried by the side plate 24 and is associated with means to cause the suction cylinder 44 to pick up the top sheet from the exposure cylinder. Such means may take various forms and the following described means is illustrative.

In FIG. 7, there is a horizontal pivot pin 105 through the top of plunger 102, on which pivots a downwardly extending arm 106, bent to pass around the solenoid. This operates as a pusher to move against contacts the end of arm 106 in position to be pushed down by the arm 106, and which in FIG. 7 is shown pushed down during energization of the solenoid.

FIG. 1 also shows the same position as FIG. 3 for the detent 108 and pusher arm 106, and also shows an upright tooth 112 on detent 108 in a notch 114 of the periphery of a disk 116 fixed on the end of shaft 58 by set screw 117. By means of set screw 117, the relative arcuate positions of disk 116 and of slot 54 may be changed for reasons explained below. FIG. 7 shows the tooth 112 releasing the disk 116 for rotation. When the disk 116 is free to turn, it is driven through the friction clutch by shaft 58, which shaft 58 drives the inner cylinder 52 at the same radial velocity as the pick-up cylinder 44 and in the same direction. When the tooth 112 is in its detaining position in the notch 114, the clutch slips and the inner cylinder 52 is stationary.

Means is provided to limit the released rotation of the inner cylinder to one revolution. A horizontal pin 118 projects from disk 116 in position to move pusher bar to the right in FIGS. 1 and 7, as the disk 116 moves clockwise, and to move it from its position holding down the tab 110. When the pusher arm 106 is thus moved to position 106 in FIG. 7, the spring 107 draws the detent up until the tooth 112 rides on the rim of disk 116 as shown by dotted lines in FIG. 7. In this position, the tab is in position 110 in FIG. 7, and suificiently high to obstruct the return of arm 106 to its normal position over the tab 110. Thus, the detent is free to rise so that the tooth 112 will enter notch 114 at the end of one revolution of the disk. This condition prevails until the solenoid is de-euergized as a result of contact between fingers 84' and plate 80. Then, the spring 104 around plunger 102 raises arm 106 which is drawn back over the tab 110 by its lateral biasing spring 119 for a new cycle of operation.

During the one revolution of the disk 116, suction from the interior of inner cylinder 52 functions through its slot 54 registering with a narrow band of holes 50 in the outer cylinder 44, as the two rotate together. The disk 56 at the one end of the inner cylinder forms one closure for a chamber for sub-atmospheric pressure, created by a suction fan unit 120 (FIG. 3) opening into the free open end of outer cylinder 44 through a stationary short tubular conduit 122 having a bearing seal at 124 with the interior of cylinder 44.

FIG. 5 best shows the operation of the apparatus. Onto the upper horizontal run of the belts 28 is fed the assembly of light-sensitive paper P and transparency T, the latter uppermost. Within the area of the suction gap the leading edge of sheet T may or may not be ahead of the leading edge of sheet P. The belts 28 carry the lamination around the cylinder 36 at a speed effective to complete the light-printing. The belts 28 hold the lamination tightly against the exposure cylinder 36 and drive the latter.

On reaching the pick-off fingers 84, the conveyer belts 28, excepting belt or belts 28', continue their endless path and immediately pass around and drive the suction cylinder 44. The fingers 84 keep the sheets close to the belts, except in the area of the suction holes 50, at which the belt or belts 28 have left the exposure cylinder as shown in FIG. 5.

At the moment that the contact is broken by the leading edge of one or the other of the transparency and the printed paper, or by the coincident edges of both sheets, the slot 54 of the inner cylinder is stationary preferably at a location S (FIG. 6) upwardly away from the vicinity of the bar 82 carrying the fingers as shown in FIG. 6.

a spring 107' a detent 108 pivoted at 109, to side plate 24. The de-- tent has a horizontally projecting tab 110 which in FIG. 3'

This is itsnormal stationary position effected by the detent and notch above-described; Its normal postion is adjustable by resetting the disk 116 on shaft 58 by set-screw 117. The normal position S could be located so that as soon as a leading edge of a sheet reaches position S, the suction picks up the sheet and the suction area revolves with the perforate cylinder. But, with such a position S, the top sheet must have a leading edge so related to the leading edge of the under-sheet that only the top-sheet, or the print P, is picked and the other sheet, or transparency T, falls away. In order to give latitude to the operator in assembling the two sheets, either one may lead. The extent to which the sheet T may lead is controlled by the location of the position S. Preferably, the position S is near that shown in FIG. 6, thus permitting the sheet T to lead by about .-inch.

The point at which contact is broken at the fingers 84' and plate 4% also may be moved, as this is related to the location of position S.

On breaking the contact, switch 99' being closed, the inner cylinder 52 starts to rotate and adjustments are so made that when the suction area meets the moving sheets, it acts first on sheet P. The suction holds the leading portion of sheet P to the cylinder 44, allowing sheet T to drop away as shown in FIG. 5.

At each side of the holes 50 in the suction cylinder, the sheet P rests on the uppermost runs of the conveyor belts 28, which can be used to carry the sheet to the right for delivery to developing means (not shown). The belts 28 peel the sheet P from the suction area. To maintain the sheet P in resting contact on the belts 28, an idler roll 13h rides on the paper P over the upper stretches of the belts It is mounted in links 132 and 132, respectively pivoted in side plates 24 and 24'.

It is to be understood that the apparatus may be constructed with multiple gap areas for suction holes 50, and for large sized prints two or more such regions may be provided. The invention is not to be considered as limited to the preferred embodiment and the preferred usage given above, and other forms and uses are contemplated as falling within the scope of the appended claims.

Reference is made to a divisional application Serial No. 351,030, filed March 11, 1964, claiming the slip-clutch.

I claim:

1. Apparatus for picking up a flexible sheet advancing in one direction and having a leading edge, comprising a stationary frame, a hollow pick-up cylinder arranged to rotate in said frame at a peripheral speed the same as the speed of the advancing sheet, guidemeans to direct said sheet into substantial tangential meeting with said pick-up cylinder, an inner hollow cylinder rotatably bearing in said pick-up cylinder, means for providing subatmospheric pressure within said inner cylinder, said pickup cylinder having perforate area around the periphery in a region of its length which lies in the path of said leading edge, said inner cylinder having open area extending in the axial direction and of relatively small arcuate extent, said open area and said perforate area being arranged so that in all relative arcuate positions of the two cylinders said open area is exposed to perforate area, trigger-operated means to effect rotation of said inner cylinder with said pick-up cylinder which last-mentioned means is operable to eifect but one revolution of said inner cylinder from and to a position of rest fixed relative to said frame, said position being located so that during said one revolution the inner cylinder exerts suction on said sheet through said pick-up cylinder after said leading edge meets said pick-up cylinder, trigger means operated by the advancing sheet as it approaches said pick-up cylinder to elfect operation of said triggeroperated means, whereby said sheet is caused to cling to said pick-up cylinder by said suction and thereby to be held to and flexed by said pick-up cylinder, and removing means to remove said picked-up sheet from said pick-up cylinder.

2. Apparatus for separating two sheets moving together in facial contact with their edges close together, comprising a stationary frame, a hollow pick-up cylinder arranged to rotate in said frame at a peripheral speed the same as the speed of the advancing sheets, guide means to direct said sheets into substantial tangential meeting with said pick-up cylinder, an inner hollow cylin-. der rotatably bearing in said pick-up cylinder, means for providing sub-atmospheric pressure within said inner cylinder, said pick-up cylinder having perforate area around the periphery in a region of its length which lies in the path of said leading edge, said inner cylinder having open area extending in the axial direction and of relatively small arcuate extent, said open area and said perforate area being arranged so that in all relative arcuate positions of the two cylinders said open area is exposed to perforate area, trigger-operated means to eifect rotation of said inner cylinder with said pick-up cylinder which last-mentioned means is operable to effect but one revolution of said inner cylinder from and to a position of rest fixed relative to said frame, said position being located so that during said one revolution the inner cylinder exerts suction on said nearer sheet through said pick-up cylinder after the leading edge of the nearer sheet meets said pickup cylinder, trigger means operated by the advancing sheets as they approach said pick-up cylinder to effect operation of said trigger-operated means, whereby said nearer sheet is caused to cling to said pick-up cylinder by said suction and thereby to be separated from said other sheet, and removing means to remove said picked-up sheet from said pick-up cylinder after separation from said other sheet.

3. Apparatus for light-printing a sensitized sheet through a light-transmitting sheet and for separating said two sheets moving together in facial contact with their leading edges close together, comprising a stationary frame, a rotary light-containing exposure cylinder in said frame, at least two side-by-side spaced-apart driven endless belts between which space is provided for picking the approaching sheets from the face of said cylinder, said belts passing around and driving said exposure cylinder and being arranged to carry said two sheets between the belts and the exposurepylinder, a hollow pickup cylinder arranged to be rotated in said frame by said belts, said belts leading from said exposure cylinder to saidpick-up cylinder, means to guide said sheets for substantial tangential meeting with said pick-up cylinder, an inner hollow cylinder rotatably bearing in said pick-up cylinder, means for providing sub-atrnosphericpressure within said inner cylinder, said pick-up cylinder having perforate area around the periphery in a region of its length between said two belts which lies in the path of said leading edges, said inner cylinder having open area extending in the axial direction and of relatively small arcuate extent, said open area and said perforate area being arranged so that in all relative arcuate positions of the two cylinders said open area is exposed to perforate area, trigger-operated means to eifect rotation of said inner cylinder with said pick-up cylinder which last-mentioned means is operable to eifect but one revolution of said inner cylinder from and to a position of rest fixed relative to said frame, said position being located so that during said revolution the inner cylinder exerts suction on said nearer sheet through said pick-up cylinder after said nearer sheet meets said pick-up cylinder, and trigger means operated by the advancing sheets as they approach said pick-up cylinder to effect operation of said trigger-operated means, whereby said nearer sheet is caused to cling to said pick-up cylinder by said suction and thereby to be separated from said other sheet, said belts having a stretch leaving said pick-up cylinder and serving to remove said pick-up sheet from said pick-up cylinder after separation from said other sheet.

4. Pick-up apparatus for a sheet of paper or the like comprising a stationary frame, a hollow rotary pick-up cylinder having a peripheral perforate zone along its length, means for continuously rotating said pick-up cylinder, coaxial rotary inner means bearing within said hollow cylinder and having longitudinal open area in the axial direction of small arcuate width positioned to register with a corresponding arcuate portion of said perforate zone and in all relative positions of the two cylinders to register with perforate area, means to provide suction to the atmosphere through said registering area and zone, and controlled means operable to eifect one revolution of said inner means at the same radial velocity as said pick-up cylinder and in the same direction from and to a fixed position of its open area relative to the frame.

5. Pick-up apparatus for an advancing sheet of paper or the like comprising a stationary frame, a hollow rotary pick-up cylinder having a peripheral perforate zone along its length, means for continuously rotating said pick-up cylinder, coaxial rotary inner means within said cylinder having longitudinal open area in the axial direction of small arcuate width positioned to register with a corresponding arcuate portion of said perforate zone and in all relative positions of the two cylinders to register with perforate area, means to provide suction to the atmosphere through said registering area and zone, activatable means operable to effect one revolution of said inner means at the same radial velocity as said pick-up cylinder and in the same direction from and to a fixed position of its open area relative to the frame, trigger means operable to activate said activatable means by said advancing sheet at a position whereby said suction picks up said sheet and leads it around with said rotating pick-up cylinder, and removal means to pull said sheet away from said cylinder against said suction.

6. Apparatus according to claim in which said activatable means includes a solenoid and in which said trigger means includes an electric circuit so changed as to activate said solenoid.

7. Apparaus according to claim 5 in which two belts laterally of the perforate zone drive said pick-up cylinder and provide said removal means.

8. Pick-up apparatus for a sheet of paper or the like comprising a stationary frame, a hollow rotary pick-up cylinder having a peripheral perforate zone along its length, means for continuously rotating said pick-up cylinder, an inner hollow cylinder rotatably bearing within said pick-up cylinder, said inner cylinder having a longitudinal opening of small arcuate width in register with said perforate zone and in all relative positions of the two cylinders to register with perforate area, means to provide sub-atmospheric pressure within said inner cylinder, and activatable means to effect rotation of said inner cylinder at the same radial velocity as said pick-up cylinder and in the same direction through one revolution out of and back to a fixed position of said longitudinal opening with respect to said frame.

9. Pickup apparatus for an advancing sheet of paper or the like comprising a stationary frame, a hollow rotary pick-up cylinder having a peripheral perforate zone along its length, means for continuously rotating said pick-up cylinder, an inner hollow cylinder rotatably bearing within said pick-up cylinder, said inner cylinder having a longitudinal opening of small arcuate width in register with said perforate zone and in all relative positions of the two cylinders to register with perforate area, means to provide sub-atmospheric pressure within said inner cylinder, activatable means operable to effect one revolution of said inner cylinder at the same radial velocity as said pick-up cylinder and in the same direction from and to a fixed position of its said opening relative to the frame, trigger means operable to activate said activatable means by the said advancing sheet at a position whereby said suction picks up said sheet and leads it around with said rotating pick-up cylinder, and removal means to pull said sheet away from said cylinder against said suction.

10. Apparatus according to claim 9 in which said activatable means includes a solenoid and in which said trigger means includes an electric circuit so changed as to activate said solenoid.

11. Apparatus according to claim 9 in which two belts laterally of the perforate zone drive said pick-up cylinder and provide said removal means.

12. Apparatus according to claim 9 in which said activatable means includes a slip-clutch between said two cylinders and detent means arranged to hold the inner cylinder stationary until released by activating said activatable means.

13. Apparatus according to claim 9 in which said activatable means includes a slip-clutch between said two cylinders and detent means arranged to hold the inner cylinder stationary until released by activating said activatable means, and also includes a solenoid activated to release said detent means.

References Cited in the file of this patent UNITED STATES PATENTS 1,691,503 Steele Nov. 13, 1928 1,691,963 Dexter Nov. 20, 1928 1,783,991 Zahn Dec. 9, 1930 1,983,921 Persson Dec. 11, 1934 2,114,593 Donnellan Apr. 19, 1938 2,352,983 Trump July 4, 1944 2,566,031 Nilson Aug. 28, 1951 2,661,685 Keen Dec. 8, 1953 2,853,169 Usselmann Sept. 23, 1958 2,906,189 Robertson Sept. 29, 1959 

4. PICK-UP APPARATUS FOR A SHEET OF PAPER OR THE LIKE COMPRISING A STATIONARY FRAME, A HOLLOW ROTARY PICK-UP CYLINDER HAVING A PERIPHERAL PERFORATE ZONE ALONG ITS LENGTH, MEANS FOR CONTINUOUSLY ROTATING SAID PICK-UP CYLINDER, COAXIAL ROTARY INNER MEANS BEARING WITHIN SAID HOLLOW CYLINDER AND HAVING LONGITUDINAL OPEN AREA IN THE AXIAL DIRECTION OF SMALL ARCUATE WIDTH POSITIONED TO REGISTER WITH A CORRESPONDING ARCUATE PORTION OF SAID PERFORATE ZONE AND IN ALL RELATIVE POSITIONS OF THE TWO CYLINDERS TO REGISTER WITH PERFORATE AREA, MEANS TO PROVIDE SUCTION TO THE ATMOSPHERE THROUGH SAID REGISTERING AREA AND ZONE, AND CONTROLLED MEANS OPERABLE TO EFFECT ONE REVOLUTION OF SAID INNER MEANS AT THE SAME RADIAL VELOCITY AS SAID PICK-UP CYLINDER AND IN THE SAME DIRECTION FROM AND TO A FIXED POSITION OF ITS OPEN AREA RELATIVE TO THE FRAME. 